Experimental study of the effect of inclined pile on the seismic behavior of pile group |
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| Institution: | 1. Postgraduate Student, Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan;2. Assistant Professor, Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan;3. Professor, Graduate School of Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan;1. School of Highway, Chang''an University, Xi''an, 710064, China;2. Xi''an Highway Engineering Testing Center, Xi''an, 710064, China;3. Shandong Construction Engineering Quality Inspection Center Co, Ltd, Jinan, 250031, China;1. Key Lab of Structures Dynamic Behavior and Control (Harbin Institute of Technology), Ministry of Education, Harbin, Heilongjiang 150090, China;2. School of Civil Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150090, China;1. DICEA, Università Politecnica delle Marche, Ancona, Italy;2. DESD, University of San Marino, San Marino, San Marino;3. SAD, University of Camerino, Ancona, Italy;1. Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Saitama, Japan;2. Mott MacDonald Hungary, Váci út 45, 1134 Budapest, Hungary;3. Department of Civil Engineering, University of Bristol, BS8 1TR UK;4. Department of Civil Engineering, University of Patras, 265 00 Patras, Greece;5. Department of Civil and Environmental Engineering, University of California, Los Angeles, CA 90095-1593, USA |
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| Abstract: | Seismic behavior of inclined piles has been considered detrimental for years. However, recent researches show that battered piles can have a beneficial effect. In this framework, a series of centrifuge tests on an inclined pile group is performed. The analysis is based on the comparative response of two 2×1 simplified pile groups: one with vertical piles and the other with one vertical and one inclined pile. The response of these pile groups to repeated earthquakes or sinusoidal inputs is analyzed through the response frequencies, the envelop curves of bending moment profiles, the axial loads measured in both piles and the kinematic response of the cap. Results highlight that the effect of inclined pile is highly influenced by the frequency content of the input. In addition, the inclined pile induces non-negligible residual bending moments, higher horizontal stiffness at the pile cap and larger rotation. |
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